Arrangement for use in joining together two plate-shaped elements

ABSTRACT

An arrangement for use in joining together two plate-shaped elements (10a, 10b, 18a, 18b), especially boarding members, which form an angle (a) usually 90°, with each other, comprises an angled means (11), one leg (12) of which extends substantially at right angles to the main plane of the one plate-shaped element (10b, 18b) and projects away from the second plate-shaped element (10a, 18a), and the other leg (13) of which extends substantially at right angles to the main plane of the second plate-shaped element (10a, 18a) and projects away from the first plate-shaped element (10b, 18b), legs (12, 13) of the angled means (11) forming abutments against a surface (14a, 14b) which is rigidly connected to the respective plate-shaped element and is detachably fastened to the latter.

This is a continuation of co-pending application Ser. No. 886,444, nowabandoned, filed on July 17, 1986 and which, in turn, is a continuationof Ser. No. 776,855 filed Sept. 18, 1985, now abandoned.

The present invention relates to an arrangement for use in joiningtogether two plate-shaped elements, which form an angle, usually 90°,with each other.

In the boarding of posts, girders and the like there are employedaccording to known engineering practice, which has changed little thelast 10-20 years, boarding elements which are held together by means ofvarious collars or the like which are fastened with relatively shortintermediate spaces around the boarding and thereby hold the individualboarding elements in position. This solution is very demanding on labourand time in that the collars have to be nailed to the boarding elementsand have to be removed after use.

By the very fact that the boarding work in many casting operationsconstitutes a substantial portion of the costs, improvements areconstantly being sought after, but as mentioned above withoutsignificant changes having been made in engineering in recent years.

The need for improvements is thus apparent, and the object of thepresent invention is to effect boarding of corners more rapidly andsimpler and hence cheaper.

This is achieved by means of an arrangement which is designed as anangled means, one leg of which extends substantially at right angles tothe main plane of the one plate-shaped element and projects away from asecond plate-shaped element, and the other leg of which extendssubstantially at right angles to the main plane of the secondplate-shaped element and projects away from the first plate-shapedelement. The legs of the angled means forming abutments against asurface, which is rigidly connected to the respective plate-shapedelement and is detachably fastened to the latter.

The invention will be further explained in the following descriptionhaving regard to the accompanying drawings, in which:

FIG. 1 shows a horizontal section where the arrangement according to theinvention is employed for boarding of a corner in a post by means ofboarding cassettes.

FIG. 2 shows a corresponding section to FIG. 1, but where the boardingis constructed by means of boarding members.

FIG. 3 shows a perspective view of the arrangement of FIG. 2.

FIG. 1 shows a horizontal section of an arrangement according to theinvention for use in boarding of a corner in for example a post by meansof boarding cassettes where the angle a between the boarding cassettesis 90°.

Each boarding cassette consists of two plates 10a, 10a' and 10b, 10b'respectively, which are usually made of plywood and which have a certainspacing, for example 10 cm. from each other. Each of these plates canalternately face towards the concrete. Between the surfaces there isarranged along their edges a U-shaped element, legs of which, such asthe leg 16a, project outwardly as an extension of the plates i.e. inalignmentwith the plates. In addition the element is designed with aninwardly projecting flange which the plywood plates form an abutmentagainst and which they are detachably fastened to by means of forexample rivets (not shown).

On boarding a corner, two boarding cassettes 10a, 10b are mounted at anangle a to each other as illustrated in FIG. 1. In the illustratedembodiment, the angle is as mentioned 90°, something which moreoveristhe most customary. An angled means 11 having legs 12, 13 which form anangle which is as large as, but opposite relative to the angle a betweenthe cassettes 10a, 10b, is arranged between the outwardly projectinglegs of the boarding cassettes. The angled means 11 forms thereby anabutment against the bottom 14a, 14b of the U-shaped element of theboarding cassette and forms with its free end 15a, 15b an abutmentagainst the outwardly projecting leg 16a, 16b of the U-shaped element.At the top partthe angled means 11 is as illustrated, angled in the formof steps, so thatit forms an abutment against each U-shaped element,which is an extension of the inner plate 10a, 10b. In this way theangled means 11 will be arranged safely in position between theoutwardly projecting members 16a, 16b and is fixed to the bottom 14a,14b of the U-shaped element by such means as detachable bolts 17 orclamps. As a result, the unit which consists of the two boardingcassettes 10a, 10b and the angled means 11 will be held rigidly togetherwith minimal possibilities for displacement relative to each other. Alsothe angled means 11 is usually made of aluminum, but can also be made ofother materials, for example galvanised steel. The breadth of the means11 can be varied, from a relatively narrowstrip to the whole length orbreadth of the boarding cassette, and the length of each leg correspondsto the distance between the plates of the cassette.

FIG. 2 shows a corresponding section to FIG. 1, where there are employedboarding members 18a, 18b instead of boarding cassettes. In thisembodiment, an element 19a, 19b projects substantially at right anglesoutwardly from a respective boarding element 18a, 18b with projections20a, 20b which the boarding member are detachably fixed to, for examplebymeans of rivets not shown. The elements 19a, 19b extend over the wholerespective length and breadth of the boarding member. A certain sectionwhich is not critical projects outwardly from the boarding member, butwhich is adapted to the length of legs 12, 13 of the angled means 11. Atits free end, each of the elements 19a, 19b is angled, so that the freeend of the means 11 forms an abutment against angled portion 21a, 21b ofthe respective element 19a, 19b, which extends in an opposite directionrelative to projection 20a, 20b of the element. In a correspondingmanner as in the embodiment of FIG. 1 the angled means 11 is fixed tothe element19a, 19b by means of bolts 22 or rivets, so that the means 11can be detached in a simple manner from the element 19a, 19b after use.Also in this embodiment there is provided a reliable and good bracingand locking.

FIG. 3 shows a perspective view of means 11 is disposed relative to theelements 19a, 19b. As indicated, a second angled portion 23a, 23b,projects in the opposite direction relative to the angled portion 21a,21band functions as a support for rivets, so that the rivets are notable to become displaced outside and thereby no longer lock togetherlegs of the angled means 11 and the elements 19a, 19b.

The invention is described in connection with boarding, either by meansof boarding cassettes or boarding members, but it can be applied in theproduction of dismountable containers or boxes of many different types.Such an application can prove to be very interesting because of thegreat flexibility which the arrangement of the invention makes possible.

I claim:
 1. An arrangement for securing two angularly disposed platestogether in fixed relation, said arrangement comprisinga pair ofU-shaped elements, each said element having a bottom, a pair of parallellegs extending perpendicularly from said bottom and at least one flangeextending perpendicularly from said bottom in a direction opposite fromsaid legs to define an abutment for a respective plate; and an angledmeans having a pair of legs defining an angle therebetween, and astepped part connecting said latter legs, each respective leg of saidmeans being disposed in parallel against said bottom and between saidlegs of a respective element.
 2. An arrangement as set forth in claim 1which further comprises bolts securing each said leg of said angledmeans to said bottom of a respective U-shaped element.
 3. An arrangementas set forth in claim 1 wherein each element includes a second flangeextending from said bottom thereof in parallel to said one flange.
 4. Anarrangement as set forth in claim 1 wherein said angled means is made ofaluminum.
 5. In combination,a pair of boarding cassettes disposed inangular relation, each cassette including a pair of spaced parallelplates and a U-shaped element secured to and between said plates, andU-shaped element having a bottom and a pair of legs extendingperpendicularly from said bottom, each said leg being in alignment witha respective plate; an angled means having a pair of legs angularlydisposed between said cassettes, each leg of said means being disposedagainst said bottom and between said legs of a respective U-shapedelement; and means securing each leg of said means to said bottom of arespective U-shaped element.
 6. The combination as set forth in claim 5wherein said angled means includes a stepped part connecting said legsthereof.
 7. The combination as set forth in claim 5 wherein said platesare made of plywood and said angled means is made of aluminum.
 8. Thecombination as set forth in claim 5 wherein each U-shaped element of arespective cassette includes a pair of flanges extending from saidbottom thereof inwardly of and against said plates.
 9. In combinationapair of boarding members disposed in angular relation; a pair ofU-shaped elements, each said element extending perpendicularly from anend of a respective boarding member and having a bottom, a pair of legsextending perpendicularly from said bottom and at least one flangeextending perpendicularly from said bottom in a direction opposite fromsaid legs to define an abutment for a respective boarding member; anangled means having a pair of legs defining as angle therebetween, and astepped part connecting said latter legs, each respective leg of saidmeans being disposed in parallel against said bottom and between saidlegs of a respective element; and means securing each leg of said meansto said bottom of a respective U-shaped element.
 10. The combination asset forth in claim 9 wherein one leg of a respective U-shape element isaligned with a respective boarding member.
 11. The combination as setforth in claim 9 wherein each boarding member is made of plywood. 12.The combination as set forth in claim 11 wherein said angled means ismade of aluminum.